משנה אויף במדבר 11:12

Rabban Shimon ben Gamaliel says: if he brought three animals without specifying [what they were for], the one suitable for a sin offering is sacrificed as a sin offering, for a burnt offering as a burnt offering, and for a well-being offering as a well-being offering. He would then take the hair of his nazirite head and threw it under the cauldron. If he shaved in the province he [also] would throw it under the cauldron. With regard to what was this said? With regard to shaving in ritual purity, whereas in shaving [after] ritual defilement he does not throw it under the cauldron. Rabbi Meir says: all [nazirites] throw it under the cauldron, except for the defiled nazirite [who shaved] in the provinces.